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| -rw-r--r-- | core/java/android/net/vcn/persistablebundleutils/IkeSessionParamsUtils.java | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/core/java/android/net/vcn/persistablebundleutils/IkeSessionParamsUtils.java b/core/java/android/net/vcn/persistablebundleutils/IkeSessionParamsUtils.java new file mode 100644 index 000000000000..2d292c830807 --- /dev/null +++ b/core/java/android/net/vcn/persistablebundleutils/IkeSessionParamsUtils.java @@ -0,0 +1,120 @@ +/* + * Copyright (C) 2021 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package android.net.vcn.persistablebundleutils; + +import static com.android.internal.annotations.VisibleForTesting.Visibility; + +import android.annotation.NonNull; +import android.net.ipsec.ike.IkeSaProposal; +import android.net.ipsec.ike.IkeSessionParams; +import android.os.PersistableBundle; + +import com.android.internal.annotations.VisibleForTesting; +import com.android.server.vcn.util.PersistableBundleUtils; + +import java.util.List; +import java.util.Objects; + +/** + * Abstract utility class to convert IkeSessionParams to/from PersistableBundle. + * + * @hide + */ +@VisibleForTesting(visibility = Visibility.PRIVATE) +public final class IkeSessionParamsUtils { + private static final String SERVER_HOST_NAME_KEY = "SERVER_HOST_NAME_KEY"; + private static final String SA_PROPOSALS_KEY = "SA_PROPOSALS_KEY"; + private static final String LOCAL_ID_KEY = "LOCAL_ID_KEY"; + private static final String REMOTE_ID_KEY = "REMOTE_ID_KEY"; + private static final String RETRANS_TIMEOUTS_KEY = "RETRANS_TIMEOUTS_KEY"; + private static final String HARD_LIFETIME_SEC_KEY = "HARD_LIFETIME_SEC_KEY"; + private static final String SOFT_LIFETIME_SEC_KEY = "SOFT_LIFETIME_SEC_KEY"; + private static final String DPD_DELAY_SEC_KEY = "DPD_DELAY_SEC_KEY"; + private static final String NATT_KEEPALIVE_DELAY_SEC_KEY = "NATT_KEEPALIVE_DELAY_SEC_KEY"; + + /** Serializes an IkeSessionParams to a PersistableBundle. */ + @NonNull + public static PersistableBundle toPersistableBundle(@NonNull IkeSessionParams params) { + if (params.getConfiguredNetwork() != null || params.getIke3gppExtension() != null) { + throw new IllegalStateException( + "Cannot convert a IkeSessionParams with a caller configured network or with" + + " 3GPP extension enabled"); + } + + final PersistableBundle result = new PersistableBundle(); + + result.putString(SERVER_HOST_NAME_KEY, params.getServerHostname()); + + final PersistableBundle saProposalBundle = + PersistableBundleUtils.fromList( + params.getSaProposals(), IkeSaProposalUtils::toPersistableBundle); + result.putPersistableBundle(SA_PROPOSALS_KEY, saProposalBundle); + + result.putPersistableBundle( + LOCAL_ID_KEY, + IkeIdentificationUtils.toPersistableBundle(params.getLocalIdentification())); + result.putPersistableBundle( + REMOTE_ID_KEY, + IkeIdentificationUtils.toPersistableBundle(params.getRemoteIdentification())); + + result.putIntArray(RETRANS_TIMEOUTS_KEY, params.getRetransmissionTimeoutsMillis()); + result.putInt(HARD_LIFETIME_SEC_KEY, params.getHardLifetimeSeconds()); + result.putInt(SOFT_LIFETIME_SEC_KEY, params.getSoftLifetimeSeconds()); + result.putInt(DPD_DELAY_SEC_KEY, params.getDpdDelaySeconds()); + result.putInt(NATT_KEEPALIVE_DELAY_SEC_KEY, params.getNattKeepAliveDelaySeconds()); + + // TODO: Handle authentication configuration, configuration requests and IKE options. + + return result; + } + + /** Constructs an IkeSessionParams by deserializing a PersistableBundle. */ + @NonNull + public static IkeSessionParams fromPersistableBundle(@NonNull PersistableBundle in) { + Objects.requireNonNull(in, "PersistableBundle is null"); + + final IkeSessionParams.Builder builder = new IkeSessionParams.Builder(); + + builder.setServerHostname(in.getString(SERVER_HOST_NAME_KEY)); + + PersistableBundle proposalBundle = in.getPersistableBundle(SA_PROPOSALS_KEY); + Objects.requireNonNull(in, "SA Proposals was null"); + List<IkeSaProposal> saProposals = + PersistableBundleUtils.toList( + proposalBundle, IkeSaProposalUtils::fromPersistableBundle); + for (IkeSaProposal proposal : saProposals) { + builder.addSaProposal(proposal); + } + + builder.setLocalIdentification( + IkeIdentificationUtils.fromPersistableBundle( + in.getPersistableBundle(LOCAL_ID_KEY))); + builder.setRemoteIdentification( + IkeIdentificationUtils.fromPersistableBundle( + in.getPersistableBundle(REMOTE_ID_KEY))); + + builder.setRetransmissionTimeoutsMillis(in.getIntArray(RETRANS_TIMEOUTS_KEY)); + builder.setLifetimeSeconds( + in.getInt(HARD_LIFETIME_SEC_KEY), in.getInt(SOFT_LIFETIME_SEC_KEY)); + builder.setDpdDelaySeconds(in.getInt(DPD_DELAY_SEC_KEY)); + builder.setNattKeepAliveDelaySeconds(in.getInt(NATT_KEEPALIVE_DELAY_SEC_KEY)); + + // TODO: Handle authentication configuration, configuration requests and IKE options. + + return builder.build(); + } +} |